Philo s



P.S.FELTER. BURGLAR PROOF LOCK.

No. 44,859. Patented Nov. 1, 1864.

inve/7225 fgm UNITED STATES PATENT FFCE.

PHILO S. FELTER, OF CINCINNATUS, NEW' YORK.

Specification of Letters Patent No. 44,859, dated November 1, 1864.

To all whom it may concern Be it known that I, PHiLo S. FELTER, ofCincinnatus, .in the county of Cortland and State of New York, haveinvented a new and Improved Burglar-Proof Safe-Lock; and I do herebydeclare that the following is a full, clear, and eXact descriptionthereof, which will enable tho-se skilled in the art to make and use thesame, reference being had to the accompanying drawings, forming part ofthis specification, in which- Figure l, is an external view of myinvention; Fig. 2, a vertical longitudinal section of the same, taken inthe line Fig. 3; Fig. 3, a horizontal. section of the same. taken in theline y, y, Fig. 2; Figs. et, 5 and G detached views of parts pertainingto the tumblers of the lock; Fig. 7, a detached view of a key for makingthe changes of the tumblers.

Similar letters of reference indicate corresponding parts.

This invention relates to a new and im proved burglar proof lock of thatclass in which a key is not employed for operating the bolt-and in whichcircularl tumblers are used.

The object of the invention is to obtain a lock of the class specifiedwhich will not admit of the tumblers being tampered with so that aknowledge of their position can be obtained in order to pick orillegitimately unlock the lock-and also to have a ready and convenientmeans for effecting the changes l of the tumblers so that they may beadjusted by different marks, figures or letters in order that the lockmay be unlockedwand further to have the dog and bolt so arranged thatthe latter may in connection with a slotted disk be acted upon by theformer in a perfect manner.

A, represents the case of the lock which may be of rectangular or othersuitable form, the outer plate of the case, that is the side nearest theeye, having a knob arbor B fitted in it, the knob C, being on the outerend of the arbor and a circular' disk or plate D being on its inner end,the disk or plate having a rectangular slot o made radially in it fromits edge.

E, represents a series of tumblers any proper number being used, threebeing shown in Fig. 3. These tumblers are of circular form, a trifleless in diameter than the disk D, and they are fitted loosely on a fixedarbor F and kept at a proper distance apart by washers Z), as shownclearlyin Fig. The arbor F, of the tumblers E is in line with the knobarbor B, and the tumblers F, are each composed of two parts, a centraldisk (Z, and an extension o, the former lying c-oncentrically within thelatter, their opposing beveled edges overlapping each other and the twobeing prevented from separating by two buttons, which attached to therim overlap the disk at two opposite points. As thus arranged and beingheld together in the same place the inner disk may be freely revolvedindependently of the rim or vice versa, and thus permit the tumblers tobe arranged to a new combination. In order to clutch permanently the oneto the other. so that they shall revolve together. one of the twobuttons is a turn button having a square hole through it and its bearingsurface made cam-shaped so that when the holes of the several buttonsare brought in line with each other and with a hole through the backplate of the lock, a key may be inserted and each turn button may be insuccession be turned, so as to clutch the two parts together or torevolve them as desired.

Each part (Z, of the tumblers has a pin one from the outer side of theinnermost tumbler E and one from each side of the parts Z of the twoother tumblers-see Fig. 3. These pins 7c which come .in contact witheach other are at equal distances from the centers of the tumblers andconstitute the means whereby the tumblers are turned or adjusted by theturning of the knob arbor B, the disk D being provided with a similarpin lo to act against the pin la of the tum bler adjoining .itwsee Fig.3.

H, represents a dog of bent or right-angular form and fitted loosely atits angle on a pin Z--see Fig. This dog is made broader at its lower endmi, than at any other part and said end m bears against the edge of thedisk D when the lock is in an unlocked or locked state.

lf, represents the bolt of the lock which is arranged to slide in aguide a in the lock case A, said guide being near the outer end of thecase through which the bolt works. The inner end of the boltis free oris allowed to work or have a certain degree of vertical play a stop orbearing o determining the length of its upward movement and also of itsoutward and inward movement in consequence of fitting in notches p, 79in the upper edge-see Fig. 2.

The upper end g, of the dog H works within a notch or recess J at theinner part of the bolt, said notch or recess having inclined sides r rand a top notched upward at each end as shown at s, s leaving a pendantswell zt shown clearly in Fig. 2. The bolt I has a tendency to rest uponthe upper end of the dog H, either by its own gravity alone or with theaid ot a spring K.

On the bolt arbor B at the outer side of the case A, there. is acircular disk L which turns with the arbor and is stamped, engraved orotherwise marked with figures or other characters, igures being shown inFig. l.

From the above description it will be seen that when the lock is in alocked state, the stop o will be in the notch p in the bolt I the upperend of the dog H, bearing against the side r, ot the recess J, and thelower end m of said dog bearing against the edge of the disk D-as shownclearly in Fig. 2. In order to unlock the lock the tumblers E require tobe turned so that their several recesses c will come in line with eachother and the recesses a of the disk I), also come in line with therecesses c in order that the lower end of the dog H may pass into saidrecesses. When this is allowed the dog H, in moving admits of the innerend of the bolt I dropping so that it will clear the stop 0, and the dogH, is then actuated so that it will throw back the bolt I by turning theknob C, the disk D, in consequence of the lower end of the dog itting inits recess a forming the connection between the dog and the knob arbor.In throwing back the bolt I, the upper end g of the dog strikes theswell t and slightly raises the inner part of the bolt, the end g, thenpasses into the rear notch s and draws back the bolt and then bearsagainst the inclined side r and throws the inner part of the bolt upwardso that the notch y) will receive the stop 0 as shown in red in Fig. 2.In order to lock the lock or throw out the bolt I, the dog H, is movedin a reverse direction, but the action is the same, the upper end of thedog in the latter case bearing against the side r of the recess QI.

The tumblers E are moved so that their recesses c will come in line witheach other by means of the pins 7c on the parts d of the tumblers andthe pin 7c on the disk D-and the distance each tumbler is to be turnedis made known by the figures on the disk L- certain ones being broughtopposite to marks on the outer plate of the lock case. These slottedtumblers with pins att-ached constitute quite an old device and theirconstruction and operation being well known to locksmiths and thoseskilled in the art they do not require' a minute description. Thenovelty attending the tumblers herein described consists in constructingthem of the two parts c, CZ, connected together as shown by which theinner parts cl may at any time be released and turned so as to bring thepins 7c in diii'erent positions relatively with each other. This turningof the plates el, is effected by inserting the square j of the key G,into the holes z' of the buttons g as previously explained so that saidbuttons may be turned in order to loosen the plates CZ. By this simplemeans the changes may be effected from time to time so as to require adifferent adjustment ot the tumblers to unlock the lock and in makingthe changes the holes z', of the buttons g of the several plates are allbrought in line with each other by adjusting certain figures on the diskL with a certain mark on the outer side of the .front plate of the lockcase.

The lower end oit the dog H, as has been previously stated bears uponthe edge of the disk D, which keeps it free from the edge of thetumblers on account of the latter being a triie less in diameter thanthe disk D. This prevents the lock being picked by obtaining a pressureof the dog on the edges of the tumblers in order to ascertain theposition of the recesses or slots e, the means usiilally resorted to byburglars to eiiect that en I do not claim a series of circular slottedtumblers to form a burglar proof lock for that is an old device, but,

I do claim as new and desire to secure by Letters Patent,

l. The construct-ing of the tumblers E of two parts c, Z connectedtogether by fixed buttons f, and adjustable or turn buttons g, providedwith square holes e', to be operated upon by a key Gr, substantially asand for the purpose herein set forth.

The circular disk D, in combination with the circular tumblers E whenthe latter are rather less in diameter than the former and both used inconnection with the dog H, for the purpose specified.

PHILO S. FELTER.

fitnesses Giras. C. Gnn, O. C. GEE.

